单原子催化剂在光催化二氧化碳还原中的研究进展

通过光催化技术将二氧化碳转化成增值的含碳化学品或燃料是解决能源危机和温室效应的一种可持续性方法. 开发高效、 廉价及高稳定性的光催化剂是提高光催化二氧化碳还原(CO₂RR)效率所面临的一大挑战. 单原子催化剂由于具有原子利用率高及电子环境可调等特性而在催化领域被广泛研究. 在光催化二氧化碳还原中, 金属单原子的加入不仅可调节光催化剂的能带结构及吸光性能等物理性质, 还可以有效提高其光生电荷转移效率, 并为研究光催化反应机理提供理想的平台. 近年来, 单原子光催化剂在二氧化碳还原领域的研究发展迅速. 本文综合评述了单原子催化剂在光还原二氧化碳反应中的研究进展, 介绍了不同载体的单原子催化剂的典型研究成果, 并展望了未来的研究趋势.

Research Progress of Single-atom Catalysts in Photocatalytic Reduction of Carbon Dioxide

The conversion of carbon dioxide into value-added carbon-containing chemicals or fuels through photo-catalytic technology is one of the sustainable ways to solve the energy crisis and greenhouse effect. However， it is a great challenge to pursue catalysts with high efficiency， low price， and high stability for improving the efficiency of photocatalytic reduction reaction of CO₂（CO₂RR）. Single atom catalysts（SACs） have been widely studied in the field of catalysis because of their high atomic utilization and adjustable electronic environment. In photocatalysis of CO₂RR， the addition of single metal atoms can not only adjust the energy band structure and the light adsorption ability of catalysts， but also effectively improve the efficiency of photogenerated charge transfer， and provide an ideal platform for the study of photocatalytic reaction mechanism. In recent years， the research of SACs in CO₂RR has developed rapidly. In this paper， the progress of SACs of photocatalytic CO₂RR is summarized， and the typical research results of SACs with different supports are introduced， and the future research trend is prospected.